Avalanche alley

Incident

Terrain Trap

gullyDepression

Group Activity

snowmobiling

Snow Depth Trigger Point

variable

Terrain Shape Trigger Point

convex

Witnessed a group climbing in the upper portion near the end of avalanche alley. One member triggered the slope with two other members in the run out. Partially buried one of the members in the run out as well as the person climbing. Suspect this failure plain was on the feb crust interface. Approximately 60-80 cm deep. All parties were able to extricate.